| Average rainfall mm/10 years (Democratic Republic of Congo) | |
| Years after 1900 | Average rainfall (mm) |
| 1901 | 122.8631 |
| 1910 | 126.487 |
| 1920 | 124.44 |
| 1930 | 124.3271 |
| 1940 | 126.6208 |
| 1950 | 126.0523 |
| 1960 | 128.9018 |
| 1970 | 132.4034 |
| 1980 | 125.5405 |
| 1990 | 127.811 |
| 2000 | 119.2098 |
| 2010 | 124.8244 |
| 2015 | 127.3143 |